Closure for containers



June' 5, 1928. 1,672,055

R. H. CARPMAEL CLOSURE FOR CONTAINERS Filed Sept. 5, 1927 mvmwom RICHARDHERBERT CARPMAEL,

By his Attorneys Patented June 5, 1928.

RICHARD HERBERT CARPMAELOF MOULTON, ENGLAND.

CLOSURE ron CONTAINERS.

Application filed September 3,

This invention relates to improvements in or modifications of theinvention described in my United States Patent No. 1,651,669 andapplication Serial No. 168,709 in which I have described a closurecomprising essentially a resilient or spring disk having a centralbulged portion capable of being sprung into release and secureposi tion,the first of wh1ch 1s above and the second below the horizontal.

According to one feature of this invention the peripheral fingers 0f thedisk are formed with an outward flare at their ends, and the internalwall of the mouth of the container is provided with a correspondingtapering recess. 7 Y

Preferably that portion of the internal wall-of the mouth of thecontainerabove the tapering recess is flared outwardly, and such thatthe diameter of the mouth "is slightly'larger than the spread of theperipheral fingers when in the release position.

vention, a sealing member may be provided attached to the underside ofthe'dlsk and in addition Preferably, in this case an additional ledge isprovided on the inner wall of the mouth 1 of the container, and againstwhich the sealmg member bears, member may underneath of the disk.

The invention is illustrated in the accom-v panying drawings in whichFigure 1 is a sectional view of the modification in which the flaredoutwardly ati peripheral fingers I are their ends. i V v v 1 Fig. 1 is amodifiedform of thedisk in Fig. 1. I

Figures 2 and 3 are sectionalviews of other-modifications.

Inhthe drawingsa designates the disk generally, 6 the peripheralfingers, 0 the neck of the container; having a recess 7' and ledge 2'for receiving the flanges k of the fingers. g is the outer cap;

Referring now to. Figure 1, a form of disk is shown having adouble-action and in which the flanged ends of the peripheral.

fingers, which are preferably provided in the former constructionillustrated, are dispensed with. The disk 0 has,peripheral fingers bwhich flare outwardly at their lower ends and engage when in the secureposition, with, a tapering recess j in the According to a furtherfeature of the in-' to, or instead of the outer cap.

If desired, the sealing be, detach ably connected to the I flangedattheir ends,

1927, Serial No. 217,429, and in GreatlBritain July 14,1926.

mouthof the container formedabove the ledge i. ,Themouth of thecontainer from the top of the recess 7" having an outwardflare as shownat j, preferably such that the diameter of the mouth is slightly largerthan the spread of the peripheral fingers when in the release position(correspond ing moved past the mid-position,there will be felt thespring in the peripheral fingers. as they give when being moved past theshoulder formed by the recess 9" and flare y Thus in a closure of thetype shown in I Figure of said Patent 1,651,669 having a diskas shown inFigure 1 to .move from the secure or closed, to the release or openposition, it is first of all necessary to actuate the shaft fto move thebulged portion d to the open position, and then pull on the closure,when the peripheral vfingerswill move past the shoulder referred to,above and move in-v wardly slightly in doing so, without affecting thediaphragm. Extraction or removal of the closure is thus mechanically, aswell as frictionally resisted.

The reverse action takes place to close.

A further advantage lies in the factthat should-it betried to apply theclosure to a containeiy when the bulged portion of the disk is in thesecure position (i. e.-the pe-' ripheral fingers having their maximumspread, such as would normally cause them to engage the wall of themouth'of the container)-owing;to the flare j of the mouth, this will befound possible without in any. Way damaging disk,:'the peripheralfingers of which are Y it would have been impracticable without damagingthe fingers and disk, and curtailing .the life of the spring.

or release position issmaller than the tapering,recess,i n. the mouth ofthev container. Then the closure 15 retained 1n position by the actionof,t-he diaphragm. of v the disk 'onlyQ It is ,ebviqns u e that as dis;shown: in

shaft 7 is provided with a pin or projection f co-operating with thesurface on the cap g. which surface iscammed as shown, so that. onrotating the knob e which in this case is preferably milled, the pin frides upon. the cam surface-causing the displace ment of the centralbulged portion (Z of the disk;

In Figure 3 the mouth of the container is provided with an additionalledge i which may: be formed to house a washer, and a sealing member gwhich may replace the outer cap 9, is provided attached to the disk a.It should, however, be understood that the sealing member 9 may beseparate from the disk a, and also an outer cap provided.

:Moreover in practice, it will be found that when a closure has beenpositioned and a ledge is employed, as soon as the disk-has moved to thesecure position the flanges on the ends of the peripheralfingers drawaway from the ledgeso that there will be a slight clearance between thelower surface of the flange and the ledge, I

If desired, the closure may-be hinged or pivotally connected to thecontainer or like member to which it is to be applied, and the hinge maybe connected either to the outer cap or disk according to the form ofclosure employed.

It should be understood that although the present type of disk is onlyillustrated in the formin which it is fast with the outer cap, it may beemployed alone as illustrated in Figures 1, 2 and ,3 of my said Patent1,651,669 orin' conjunction with an outer cap and operating shaft asshown in Figure 4 thereof. Further the disk may be treated so as to actas a springdisk as shown in Figures 1 and 2 of my second applicationNo.168,709, or be modified in a manner similar to the other -modificationsshown therein.

WVhat I claimis 1. A closure for containers comprising the combinationwith a resilient disk formed with a number of-peripheral fingers havingan outward flare and capable of being sprung into releaseand securepositions, of a containerthe internal wall of whose mouth is providedwith a tapering recess with which the fingers engage when in thesecureposition.

2. A closure for containers comprising the combination with a resilientdisk formed with a number of peripheral fingers having an outward flareand capable of being sprung into release and secure positions, of acontainer the internal wall of whose mouth is provided with a taperingrecess with which the fingers engage when in the secure position, anoutercap connected to the disk and adapted when the closure is appliedto rest upon the top of the mouth-of the container.

3. A closure for containers comprising the combination with a springdisk formed with a. number of peripheral fingers having an outward flareand capable of movement into release and secure positions but which arebiased under their own actionnormally to assume one of said extremepositions, of a,

container the internal wall of whose mouth is provided with a taperingrecess with which the fingers engage when in the secure-position.

4. A closure for containers comprising the combination with a resilientdisk formed with a number of peripheral fingers having an outward flareand capable of being sprung into release and secure positions, of acontainer the internal wall of whose mouth is provided with a taperingrecessforming a ledge, said fingers in the secure position engaging saidrecess.

-5. A-closure for containers comprising the combination with a resilientdisk formed with a number of peripheral fingers having an outward flareat their ends and capable of being sprung into release and securepositions, of a container the internal wall of whose mouth is providedwith a tapering recess with which the-fingers engage when in the secureposition to mechanically as well as frictionally resist removal of theclosure.

6. The combination with a closure as claimed in claim 5 of an outer capconnected to the'disk and adapted when the closure is applied to restupon the top of the mouth I of the container.

7. The combination Wlth' a closure. as

claimed in claim 5 of a shank fast with the disk and an outer capmountedon said shank on which ithas limited movement corresponding tothe displacement of the disk. Y,

8. A closure for containers comprising the combination with a resilientdisk formed with a number of peripheral fingers having an outward flareat their ends and capable of being sprung into release and securepositions, of a container the internal wallof whose'mouthfis provided with atapering recess with which the fingers engage when in the secureposition, and which above the recess is flared outwardly such that-thediameter at the mouth is slightly larger than thespread of theperipheral fingers of. the

disk when in the release position.

9. The combination with a closure as claimed in claim 5.of an outer. capconnected to the disk and adapted when the closureis applied to restupon the top of the month of the container which above the, recess isslightly larger than the spread of the peripheral fingers of the diskwhen in the release position. a

10. A closure the combination with a spring disk formed with a number ofperipheral fingers having an outward flare at their ends and capable ofmovement into release and secure 13081-- tions but which are biasedunder their own action normally to assume one of said extreme positions,of a containerthe internal wall of whose mouth is provided with a ta-'pering recess with which the fingers engage when in the secure position.p I

11. A closure for containers comprising the combination with a springdisk formed with a number of peripheral fingers having an outward flareat their ends and capable of movement into release and secure positionsbut which are biased under their own action normally to assume one ofsaid extreme positions, of a container the internal wall of whose mouthis provided with a tapering recess with which the fingers engage when inthe secure position, and means on the disk for operating the closure.

12. A closure for containers comprising the combination with a springdisk formed with a number of peripheral fingershaving an outward flareat their ends and capable of movement into release and secure positionsbut which are biased under their own action normally to assume one ofsaid extreme positions, of a, container the internal wall oi whose mouthis formed with a tapering recess with which the fingers engage when inthe secure position, and an outer cap connected to the disk and adaptedwhen the closure is applied to rest upon the top of the mouth of thecontainer.

13. A closure for. containers the combination with a spring disk formedwith a number of peripheral fingers having an outward flare at theirends and capable of movement, into release and secure positions butwhich are biased under their own action normally to assumeone of saidextreme positions, of a container the internal wall of whose mouth isformed with a tapering recess with which the fingers, engage when in thesecure position to mechanically as well as frictionally resist removalof the closure, a shank fast on the disk and an out-s er cap mounted onsaid shank on which it has limited movement corresponding to thedisplacement of the disk.

14. A closure for containers comprising the combination with a springdisk formed with a number of peripheral fingers having anvoutward flareat their ends and capable of movement into release and secure posiitorcontainers comprising comprising tions but which are biased under theirown act1on normally to assume one or said extreme positions,

of a container the internal wall of whose mouthis provided with atapering recess with which the fingers engage when in the secureposition, and means on the disk for operating the closure, a shank faston the disk, an outer cap mounted on said shank on which it has limitedmovement corresponding to the displacement of the disk and means forlocking the disk in the secure and/or release positions to preventdisplacement of the central portion with respect to the outer cap.

15. A closure for containers comprising the combination. with a'springdisk formed with'a number or peripheral fingers having an outwardflare at their ends and capable or'inovement into release. and securepositions but which are biased normally under their-own action to assumeone of said extreme positions, of a container the internal wall of whosemouth is provided with a tapering recess with which the fingers engagewhenin the secure position, and which above the recess is flaredoutwardly such that the diameter at the mouth is slightly larger thanthe spread of the peripheral fingers of the disk when in the releaseposition.

16. A closure for containers comprising the combination with a springdisk formed with a number of peripheral'fingers having an outward flareat their ends and capable of movement into release and secure posi tionsbut which are biased normally under theirown action to assume one ofsaid extreme positions, of a containerth e internal wall or whose mouthis provided with a tapering recess with which the fingers en-' gage whenin the secure position, and which above the recess is flared outwardlysuch that the diameter at the mouth is slightly larger than the spreadof theperipheral fingers of the disk when in the release position, andan outer cap connected tolthe disk and adapted when the closure isapplied to rest upon the top of the mouth of the container. I v

17. A .closure for containers comprising the combination with a springdisk formed with a number of peripheral fingers'having an outward flareat their ends andcapable or" movement into release and secure positionsbut which are biased under their own action normally to assume thesecure posit1on,of a container the nternal, wall of whose mouth isprovided with a tapering recess with which the fingers engage when inthe secure .position.

In testimony that I claim the foregoing as my invention I have signed myname this 25th day of August, 1927.-

RioHARD HERBERTLCARPMAEL. A p

